Disclosure of Invention
The invention provides a moving vehicle for disassembling a cutter head of a shield machine in a shield tunnel and a construction method thereof, wherein the moving vehicle supports the cutter head when the cutter head is cut, so that the safety and stability of the cutting process of the cutter head are ensured.
The technical scheme adopted by the invention for solving the technical problems is as follows: the mobile vehicle for disassembling the cutter head of the shield machine in the shield tunnel is used for disassembling and transporting the cutter head of the shield machine and comprises a chassis, a cutter head supporting structure, a protecting structure, a pressure sensing device and an auxiliary structure, wherein the cutter head supporting structure and the protecting structure are arranged on the chassis, the protecting structure is positioned on two sides of the cutter head supporting structure, and the pressure sensing device is arranged on the cutter head supporting structure;
the cutter head supporting structure comprises a cutter head support and a lifting supporting rod, the cutter head support and the lifting supporting rod are vertically arranged on the chassis and located in the same vertical plane, the lifting supporting rod is located below the cutter head support, the top end of the lifting supporting rod penetrates through the cutter head support to be in contact with a cutter head of the shield tunneling machine, and the pressure sensing device is arranged on the lifting supporting rod.
Further, the cutterhead bracket comprises a box body and a supporting frame, wherein the box body is arranged on the chassis in groups, and the supporting frame is arranged on the box body; and the support frame is provided with a yielding hole, and the lifting support rod passes through the yielding hole to be contacted with the cutter head of the shield machine.
Further, the lifting support rods are arranged on the chassis in groups and comprise lifting rods and contact pads, the contact pads are arranged at the top ends of the lifting rods, and the surface shapes of the contact pads are matched with the shapes of the cutterheads.
Further, the protection structure comprises a mounting tenon and a protection rod, wherein the mounting tenons are arranged on the chassis at intervals, and the protection rod is detachably arranged on the tenons.
Further, the bottom of the protection rod is provided with fixing grooves, the fixing grooves are arranged in groups, and the installation tenons are located in the fixing grooves.
Further, the surface shape of the supporting frame is arc-shaped and is matched with the shape of the cutterhead.
Further, the auxiliary structure comprises a hydraulic oil tank, a push rod and a controller, wherein the hydraulic oil tank is arranged on the chassis and is connected with the lifting support rod, the push rod is arranged at the front end of the chassis, the controller is in signal connection with the pressure sensing device, and the controller displays real-time pressure values.
Further, the chassis is provided with a movable wheel and a connecting card, and the connecting card is arranged at the rear end of the chassis.
A construction method of a mobile vehicle for disassembling a cutter head of a shield machine in a shield tunnel comprises the following steps:
s1, positioning a shield tunneling machine: before the shield machine receives, fixing a receiving base to a proper position, pushing the shield machine to the receiving base, and enabling a cutter head of the shield machine to exceed the receiving base;
s2, positioning the mobile vehicle: moving the mobile vehicle to the position right below the cutter head of the shield tunneling machine, and supporting and stabilizing the mobile vehicle;
s3, extending a cutter disc supporting structure: the lifting support rod is controlled to extend through the controller until the lifting support rod is contacted with the shield tunneling machine cutterhead, the controller displays pressure readings, and the protective rod is arranged at a proper position according to the size of the shield tunneling machine cutterhead so as to clamp the shield tunneling machine cutterhead;
s4, cutterhead cutting: manually cutting a cutter head of the shield machine, and monitoring the pressure value on the controller in real time until the pressure value on the controller is kept stable at a high position;
s5, the cutterhead falls into position: the controller is used for controlling the lifting support rod to slowly descend, monitoring the pressure value on the controller, and continuously controlling the lifting support rod to descend after confirming that the shield machine cutterhead is completely cut and separated, and enabling the cut shield machine cutterhead to fall onto the cutterhead support, and continuously controlling the lifting support rod to descend until the shield machine cutterhead is separated from the shield machine cutterhead;
s6, cutter head transfer: and adjusting the installation position of the protective rod to clamp and fix the cut shield machine cutterhead stably, and then pushing the mobile vehicle to drive the shield machine cutterhead to move to a designated position.
Further, in step S4, during the cutting process of the cutter head of the shield machine, the pressure value on the controller is gradually increased until the cutter head of the shield machine is completely cut, and the pressure value on the controller is kept stable at a high position;
in step S5, after the shield tunneling machine cutterhead falls onto the cutterhead support, the pressure value on the controller is gradually reduced until the pressure value on the controller returns to zero, and at the moment, the shield tunneling machine cutterhead completely falls onto the cutterhead support.
The invention has the following beneficial effects:
the cutter disc supporting structure is arranged to support the cutter disc, so that the stability of the cutter disc in the cutter disc cutting process is ensured, the safety of constructors is further ensured, the complicated degree of the cutter disc supporting and fixing operation in the cutting process is reduced, the operation efficiency is improved, and the operation difficulty is reduced;
the pressure sensing device is arranged to monitor the cutting process of the cutter disc in real time, so that the cutting progress of the cutter disc can be monitored and displayed to ensure the safety of operation, the cutting operation progress of the cutter disc is visual and controllable, and the stability, the high efficiency and the safety of the cutting operation of the cutter disc are further ensured.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of this patent, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the patent and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be configured and operated in a particular orientation, and are therefore not to be construed as limiting the patent.
As shown in fig. 1, 2 and 3, a mobile vehicle for disassembling a cutter head of a shield machine in a shield tunnel is used for disassembling and transporting the cutter head of the shield machine, and comprises a chassis 1, a cutter head supporting structure 2, a protecting structure 3, a pressure sensing device and an auxiliary structure, wherein the cutter head supporting structure 2 and the protecting structure 3 are arranged on the chassis 1, the protecting structure 3 is positioned on two sides of the cutter head supporting structure 2, and the pressure sensing device is arranged on the cutter head supporting structure 2.
The movable vehicle is arranged to conveniently move below the cutter head of the shield machine, and supports the cutter head when the cutter head of the shield machine is cut, so that stability of the cutter head when the cutter head is cut is ensured, the cutting progress of the cutter head is confirmed through real-time monitoring data of the pressure sensor, and intuitiveness of the operation progress and safety of operators are ensured.
As shown in fig. 1, 2 and 4, the cutterhead support structure 2 comprises a cutterhead support 21 and a lifting support rod 22, wherein the cutterhead support 21 and the lifting support rod 22 are vertically arranged on the chassis 1 and are positioned in the same vertical plane; the cutter disc support 21 is used for bearing the cutter disc which is completely cut off, the lifting support rod 22 is used for supporting the cutter disc and transferring the cutter disc to the cutter disc support 21, the lifting support rod 22 is located below the cutter disc support 21, the top end of the lifting support rod 22 penetrates through the cutter disc support 21 to be in contact with the cutter disc of the shield machine, and the pressure sensing device is arranged on the lifting support rod 22.
In the operation process, the lifting support rod 22 extends upwards to be in contact with the outer Zhou Humian of the cutterhead, the cutting progress of the cutterhead is confirmed according to real-time monitoring data on a pressure sensor arranged on the lifting support rod 22, the cutterhead which is completely cut is supported by the lifting support rod 22, when the lifting support rod 22 descends to the cutterhead support 21, the cutterhead falls onto the cutterhead support 21, the lifting support rod 22 continues to descend, and the cutterhead is carried and placed through the cutterhead support 21.
As shown in fig. 4 and 5, further, the cutterhead support 21 includes a box 211 and a supporting frame 212, the box 211 is set on the chassis 1, and the supporting frame 212 is set on the box 211; and the support frame 212 is provided with a yielding hole 213, and the lifting support rod 22 passes through the yielding hole 213 to be contacted with the cutter head of the shield tunneling machine.
Preferably, two boxes 211 are oppositely arranged and positioned at two sides of the bottom surface of the supporting frame 212 to support the supporting frame 212, and the lifting supporting rod 22 is positioned between the two boxes 211.
As shown in fig. 4, further, the lifting support rods 22 are set on the chassis 1 in groups, and include lifting rods 221 and contact pads 222, the contact pads 222 are set at the top ends of the lifting rods 221, and the surface shape of the contact pads 222 is matched with the shape of the cutterhead, so as to be attached to the shape of the cutterhead, ensure the stability of the state when supporting the cutterhead, avoid potential safety hazards caused by shaking of the cutterhead, and increase the contact area with the cutterhead, so as to ensure the stability of placing the cutterhead.
Preferably, three lifting support rods 22 are arranged, two lifting support rods 22 positioned on two sides are oppositely arranged, and the lifting support rod 22 arranged in the middle passes through the center of the cutterhead.
As shown in fig. 3 and 5, further, the guard structure 3 includes a mounting tenon 31 and a guard bar 32, the mounting tenons 31 are disposed on the chassis 1 at intervals, and the guard bar 32 is detachably mounted on the tenons 31.
Further, the bottom of the guard bar 32 is provided with fixing grooves, the fixing grooves are arranged in groups and matched with the arrangement positions of the mounting tenons 31, the guard bar 32 is placed at different positions according to actual conditions and is connected with the mounting tenons 31 at corresponding positions, and the mounting tenons 31 are located in the fixing grooves. In the cutter head cutting process, the fixed position of the protection rod 32 is flexibly adjusted according to the operation progress and the size of the cutter head, so that the protection rod 32 can clamp and fix the cutter head, and the cutter head is prevented from moving in the horizontal or vertical transportation process.
Further, the surface of the supporting frame 212 is arc-shaped and matches with the shape of the cutterhead.
Further, the auxiliary structure comprises a hydraulic oil tank, a push rod and a controller, wherein the hydraulic oil tank is arranged on the chassis 1 and is connected with the lifting support rod 22, the push rod is arranged at the front end of the chassis 1, the controller is in signal connection with the pressure sensing device, and the controller displays real-time pressure values.
Further, the chassis 1 is provided with a moving wheel and a connecting card, and the connecting card is arranged at the rear end of the chassis 1.
As shown in fig. 1 and 2, a construction method of a mobile vehicle for disassembling a cutter head of a shield machine in a shield tunnel comprises the following steps:
s1, positioning a shield tunneling machine: before the shield machine receives, a receiving base is fixed to a proper position, the height of the receiving base is 1-2cm lower than that of a cutter head of the shield machine, so that the shield machine can be directly pushed onto the receiving base, then the shield machine is pushed onto the receiving base, the cutter head of the shield machine exceeds the receiving base, no base or other structures are arranged below the cutter head, and the moving vehicle can move below the cutter head;
s2, positioning the mobile vehicle: moving the mobile vehicle to the position right below the cutter head of the shield tunneling machine, and supporting and stabilizing the mobile vehicle;
s3, extending a cutter disc supporting structure: the lifting support rod 22 is controlled to extend through the controller until the lifting support rod 22 contacts with the shield machine cutterhead, and small-value pressure readings are displayed on the controller, so that the lifting support rod 22 contacts with the shield machine cutterhead at the moment and does not generate thrust to the shield machine cutterhead, and the cutterhead instability caused by the thrust or gaps between the cutterhead and the lifting support rod 22 is avoided after the cutterhead is cut; then, according to the size of the cutter head of the shield machine, the protective rod 32 is arranged at a proper position to clamp the cutter head of the shield machine, and at the moment, the cutter head is not completely cut, and the stability of the cutter head can be ensured by single-side clamping of the cutter head;
s4, cutterhead cutting: manually cutting a cutter head of the shield machine, and monitoring the pressure value on the controller in real time until the pressure value on the controller is kept stable at a high position; the cutter head is deformed gradually in the cutting process, the weight of the cutter head is gradually transferred to the lifting support rod 22 by the shield tunneling machine, so that the value monitored by the pressure sensing device on the lifting support rod 22 is gradually increased, and when the weight of the cutter head is completely borne by the lifting support rod 22, the value of the pressure detected by the pressure sensing device is in a stable high position, so that the cutter head is completely cut at the moment;
s5, the cutterhead falls into position: the controller is used for controlling the lifting support rod 22 to slowly descend, monitoring the pressure value on the controller, continuously controlling the lifting support rod 22 to descend after confirming that the shield machine cutterhead is completely cut and separated, and continuously controlling the lifting support rod 22 to descend until the shield machine cutterhead is separated from the shield machine cutterhead when the cut shield machine cutterhead falls onto the cutterhead support 21;
s6, cutter head transfer: after the cutterhead is completely cut, the mounting position of the protective rod 32 is adjusted at the other side, the cut cutterhead of the shield machine is clamped and stabilized through the protective rods 32 at the two sides, and then the mobile vehicle is pushed to drive the cutterhead of the shield machine to be transferred to the designated position.
Further, in step S4, during the cutting process of the cutter head of the shield machine, the pressure value on the controller is gradually increased until the cutter head of the shield machine is completely cut, and the pressure value on the controller is kept stable at a high position;
in step S5, after the shield tunneling machine cutterhead falls onto the cutterhead support 21, the pressure value on the controller gradually decreases until the pressure value on the controller returns to zero, and at this time, the shield tunneling machine cutterhead falls onto the cutterhead support 21 completely.
Preferably, the small-value pressure reading and the high-position pressure value displayed on the controller in the construction method are the relative values displayed before and after the cutterhead is cut in the construction process, and are the relative values after the pressure values on the controller are compared; when the cutterhead is not cut, the lifting support rod 22 is not stressed, at the moment, the real-time monitoring data on the pressure sensor is smaller than the stable large value, so that the value displayed on the controller is smaller, and as the cutterhead is cut, the weight of the cutterhead is gradually born by the lifting support rod 22, at the moment, the real-time monitoring data on the pressure sensor is gradually increased, after the cutterhead is completely cut, the pressure value detected by the pressure sensing device is in a stable high position, and compared with the value displayed on the pressure sensor when the cutterhead is not cut, the pressure value is a stable large value.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.